Mario Masciulli | |
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| Born | 15 September 1909 Livorno, Italy |
| Died | 16 October 1991. aged 82 Caracas, Venezuela |
| Allegiance |  Italy |
| Service | Regia Marina (Italian Royal Navy) |
| Years of service | 1932–1945 |
| Rank |  Major |
| Unit | Decima Flottiglia MAS |
| Battles / wars | World War II |
| Awards | Silver Medal of Military Valor |
Mario Elbano Masciulli Manelli, Baron Miglianico (Livorno, Italy, 15 September 1909 – Caracas, Venezuela, 16 October 1991) was a prominent military engineer of the Italian Regia Marina, Major of Genio Navale and belonging to the recognized Decima Flottiglia MAS as director of the Office of Submarine Secret Weapons during Second World War. He was awarded the Silver Medal of Military Valor.